Link constraints

Sets constraints on the values that can be entered in a link field. Since link fields are used to hold references to binary data, the constraints actually apply to the referenced binary data rather than the reference itself.

Syntax

<constraints>
    <required>...</required>?
    <mime-type>...</mime-type>*
  </constraints>

Examples

• This example shows typical constraints for a link field that is to be used for image objects.

  <constraints>
    <mime-type>image/jpeg</mime-type>
    <mime-type>image/png</mime-type>
  </constraints>